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TRUCK SERVICE MANUAL
TM 5-4210-230-14&P-1
COOLING SYSTEM
Fig. 7 Using SE-1870 Cooling System Pressure Tester with
Adapter
2.
Hydrometers
Hydrometers (Fig. 8) are used to test the freezing
protection of an antifreeze solution and work on the
principle of specific gravity or weight of the antifreeze
solution. They are simple to use if used in the proper
manner. When using the hydrometer, the solution
must be at least 44 degs. C (110 degs. F), the
temperature and level must be noted correctly and the
float must be able to move freely. Read only the
hydrometer scale corresponding to the type antifreeze
solution in the radiator. Keep hydrometer clean inside
and out and treat it with the same care as given any
other precision instrument.
3.
SE-2384 Pressure Tester
This tester (Fig. 9) consists of a heavy duty pump
complete with adapters for remotely applying pressure
to the cooling system at the radiator fill neck. The
pump is equipped with a pressure gauge, manual
pressure relief valve and hose assembly with twist-on
clamp bracket to receive the adapters. The adapters
can be quickly attached together for a small or large
filler neck either with a shallow or deep neck.
4.
SE-2395 Antifreeze and Battery Tester
This tester (Fig. 10) is designed for quick and accurate
checking of antifreeze protection and battery specific
gravity readings. Coolant may be checked hot or cold
with a minimum amount of coolant or battery acid
required. Operating instructions are included with the
tester.
Fig. 8 Using Hydrometer to Test Antifreeze Solution
Fig. 9 SE-2384 Cooling System Pressure Tester
CTS-2019P Page 10
PRINTED IN UNITED STATES OF AMERICA
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